calculator_cpp.cpp

// C++ program to create calculator using 
// switch statement 
#include <iostream> 
using namespace std; 

// Main program 
main() 
{ 
	char op; 
	float num1, num2; 

	// It allows user to enter operator i.e. +, -, *, / 
	cin >> op; 

	// It allow user to enter the operands 
	cin >> num1 >> num2; 

	// Switch statement begins 
	switch (op) { 
		
		// If user enter + 
		case '+': 
			cout << num1 + num2; 
			break; 
		
		// If user enter - 
		case '-': 
			cout << num1 - num2; 
			break; 
		
		// If user enter * 
		case '*': 
			cout << num1 * num2; 
			break; 
		
		// If user enter / 
		case '/': 
			cout << num1 / num2; 
			break; 
		
		// If the operator is other than +, -, * or /, 
		// error message will display 
		default: 
			cout << "Error! operator is not correct"; 
			break; 
	} // switch statement ends 

	return 0; 
}